I use Thunderbird 31.2.0 and I need to get warning when replying email from a different identity.
For example, I got a message from
From : firstname.lastname@example.org Subject : something To : email@example.com
When I reply with firstname.lastname@example.org:
From : email@example.com Subject : something To : firstname.lastname@example.org
How to make Thunderbird warn me for replying from an email which doesn't match the one I received ?